Table 1 Characteristics of adult women by sexual partnering in the year before interview
| Â | Concurrent partnerships | Serially monogamous partnerships | Monogamous partnerships | Â | |
|---|---|---|---|---|---|
| Â | 1- 3Â month gap between partners | 4+ month gap between partners | Â | ||
|  | n = 478 | n = 220 | n = 143 | n = 5,950 |  |
|  | Weighted n = 1,902,824 | Weighted n = 903,503 | Weighted n = 530,948 | Weighted n = 33,101,3967 | p-value* |
| Â | Weighted percentages (95% Confidence Intervals) | Â | |||
Age at first intercourse | Â | Â | Â | Â | <.0001 |
  <15 years | 25.3 (19.3-32.4) | 20.8 (13.4-30.7) | 9.1 (5.9-13.9) | 10.9 (9.6-12.2) |  |
  15-17 years | 50.1 (43.5-56.7) | 41.7 (32.1-51.9) | 53.4 (41.7-64.8) | 46.3 (44.2-48.4) |  |
  18 + years | 24.6 (19.5-30.4) | 37.6 (27.7-48.6) | 37.4 (26.7-49.6) | 42.9 (40.3-45.5) |  |
Sociodemographic factors | Â | Â | Â | Â | Â |
 Age at interview |  |  |  |  | <.0001 |
  21-24 years | 30.2 (23.6-37.7) | 39.0 (29.0-50.1) | 25 (16.7-35.6) | 13.7 (12.3-15.2) |  |
  25-29 years | 30.6 (24.2-37.9) | 36.3 (27.9-45.5) | 33.2 (24.2-43.7) | 20.9 (19.2-22.7) |  |
  30-34 years | 15.1 (10.1-22.0) | 10.2 (6.9-14.8) | 9.6 (5.8-15.4) | 20.0 (18.3-21.7) |  |
  35-39 years | 11.5 (7.9-16.4) | 8.6 (4.5-15.6) | 17.1 (7.4-34.8) | 22.8 (21.3-24.3) |  |
  40-44 years | 12.5 (8.3-18.4) | 6.0 (3.4-10.5) | 15.1 (7.8-27.3) | 22.7 (20.8-24.7) |  |
 Race/Ethnicity |  |  |  |  | <.0001 |
  White, non-Hispanic | 63.0 (56.0-69.6) | 60.8 (50.0-70.6) | 57.1 (44.1-69.1) | 64.6 (60.6-68.4) |  |
  Black, non-Hispanic | 26.7 (21.0-33.3) | 20.0 (13.2-29.1) | 29.6 (19.4-42.3) | 12.4 (10.3-14.8) |  |
  Hispanic | 7.6 (4.8-11.6) | 14.6 (8.1-24.8) | 10 (5.6-17.5) | 17.2 (13.9-21.0) |  |
  Other, non-Hispanic | 2.7 (1.4-5.3) | 4.6 (2.0-10.6) | 3.3 (1.3-8.1) | 5.8 (4.3-7.7) |  |
 Educational attainment |  |  |  |  | 0.71 |
  Less than high school | 14 (10.5-18.4) | 11.4 (6.7-18.8) | 9.1 (5.2-15.5) | 13.6 (11.8-15.6) |  |
  High school graduate | 25.4 (20.1-31.7) | 24.7 (17.1-34.2) | 21 (12.6-32.8) | 24.8 (22.7-27.0) |  |
  At least some college | 60.6 (53.1-67.6) | 63.9 (53.5-73.1) | 69.9 (57.9-79.7) | 61.7 (58.8-64.5) |  |
 Marital status |  |  |  |  | <.0001 |
  Married or cohabitating | 17.5 (12.1-24.5) | 11.2 (6.0-19.9) | 15.4 (8.7-25.7) | 77.8 (75.7-79.7) |  |
  Formerly married | 26.1 (20.5-32.6) | 25.4 (17.8-34.9) | 29 (18.6-42.2) | 7.2 (6.3-8.3) |  |
  Never married | 56.4 (48.8-63.8) | 63.4 (53.7-72.1) | 55.6 (43.6-67.0) | 15 (13.3-16.8) |  |
 Income |  |  |  |  | 0.004 |
  <100% federal poverty level | 26.1 (20.5-32.7) | 27.1 (19.2-36.9) | 28.6 (18.0-42.1) | 16.8 (14.9-18.8) |  |
  100-199% federal poverty level | 23.5 (18.1-30.0) | 26.7 (18.9-36.3) | 19.0 (11.2-30.4) | 22.7 (20.9-24.6) |  |
  ≥200% federal poverty level | 50.4 (43.0-57.8) | 46.2 (36.9-55.7) | 52.4 (40.2-64.4) | 60.6 (57.6-63.4) |  |
Childhood variables | Â | Â | Â | Â | Â |
 Mother’s education |  |  |  |  | 0.024 |
  Less than high school | 17.8 (12.9-24.0) | 16.5 (10.0-26.2) | 12.4 (6.9-21.3) | 23.6 (20.9-26.6) |  |
  High school graduate | 34.3 (28.4-40.6) | 28.3 (20.5-37.5) | 35.3 (25.1-47.1) | 35.0 (32.7-37.3) |  |
  Some college or associate’s degree | 29.7 (23.6-36.7) | 34.2 (25.3-44.3) | 34.5 (23.3-47.8) | 22.1 (20.4-23.9) |  |
  College graduate | 18.2 (13.4-24.3) | 21.0 (13.9-30.5) | 17.8 (9.8-30.1) | 19.3 (17.3-21.4) |  |
 Father’s education |  |  |  |  | 0.0001 |
  Less than high school | 16.9 (12.1-23.3) | 15 (9.0-23.8) | 8.0 (4.2-14.8) | 23.2 (20.8-25.9) |  |
  High school graduate | 35.5 (28.1-43.7) | 26.1 (19.2-34.4) | 29.6 (19.9-41.7) | 30.5 (28.5-32.4) |  |
  Some college or associate’s degree | 20.9 (15.5-27.6) | 25.4 (17.2-35.8) | 20.9 (13.9-30.3) | 17.0 (15.4-18.7) |  |
  College graduate | 16.8 (11.6-23.8) | 24.0 (15.9-34.4) | 30.6 (18.5-46.1) | 22.6 (20.3-25.2) |  |
  No father figure present | 9.8 (6.6-14.5) | 9.5 (5.3-16.4) | 10.8 (5.9-19.1) | 6.7 (5.8-7.7) |  |